Roger, if you want a good .50cal then you are on the right track with the TC platform. I have the Pro Hunter system with several CF barrels and a .50cal ML barrel. Also a 12gu slugger. I personally am under an inch at 100 in 5 shot groups with each and every barrel for that rig. Like Barnes Addict, I did Mike Bellm's accurizing system. It was a little uncalled for as the rig shot great before hand. BUT it shot even better after I did the work. You really don't need to go the custom route unless you want a .45. One bad thing about the .50cal barrels is, it will be a crap shoot as to weather or not you will be able to shoot connical bullets. That QLA crap on the end of the barrels is junk. It's also junk that I removed post haste! Cut it off and crowned it.